000 00333nam a2200109Ia 4500
008 130131s9999 xx 000 0 und d
100 _aLi Geok Jin
245 _aUnderstanding chemistry O level / Li Geok Jin
260 _bSingapore : GLM, 2011
300 _a334 p. : ill. ; 24 cm.
650 _aChemistry --Examinations, questions, etc
999 _c33036
_d32626